Method for controlling a wind farm

In order to specify a method for the regulation of a wind park comprised of a multiplicity of wind energy installations (WT, . . . , WT), wherein the wind park is connected to an electric utility grid into which the electric power generated by the wind park is fed, and the wind park includes a control input by means of which nominal controlled variables of the wind park can be set, which can be adapted to highly different wind park topologies using the least possible adaptation expenditures, which permits the addition or removal of wind energy installations to or from the wind park with minimal adaptation expenditures, which is utilizable without a measurement of the park network data at the grid transfer point and which, moreover, allows the integration of wind energy installations by different manufacturers into a wind park, it is proposed that each wind energy installation (WT, . . . , WT) is regulated decentralized in order to maintain at least one nominal controlled variable of the wind park, wherein as a function of the nominal controlled variable for the wind park at least one controlled input variable (Pref, Qref) for the wind energy installation (WT, . . . , WT) is calculated.